1aop

From Proteopedia

(Difference between revisions)

Revision as of 10:10, 18 November 2020

SULFITE REDUCTASE STRUCTURE AT 1.6 ANGSTROM RESOLUTION

Structural highlights

1aop is a 1 chain structure with sequence from Escherichia coli (strain b). This structure supersedes the now removed PDB entry 1geo. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , ,
Gene:	CYSIJ (Escherichia coli (strain B))
Activity:	Sulfite reductase (NADPH), with EC number 1.8.1.2
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[CYSI_ECOLI] Component of the sulfite reductase complex that catalyzes the 6-electron reduction of sulfite to sulfide. This is one of several activities required for the biosynthesis of L-cysteine from sulfate.[HAMAP-Rule:MF_01540]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Fundamental chemical transformations for biogeochemical cycling of sulfur and nitrogen are catalyzed by sulfite and nitrite reductases. The crystallographic structure of Escherichia coli sulfite reductase hemoprotein (SiRHP), which catalyzes the concerted six-electron reductions of sulfite to sulfide and nitrite to ammonia, was solved with multiwavelength anomalous diffraction (MAD) of the native siroheme and Fe4S4 cluster cofactors, multiple isomorphous replacement, and selenomethionine sequence markers. Twofold symmetry within the 64-kilodalton polypeptide generates a distinctive three-domain alpha/beta fold that controls cofactor assembly and reactivity. Homology regions conserved between the symmetry-related halves of SiRHP and among other sulfite and nitrite reductases revealed key residues for stability and function, and identified a sulfite or nitrite reductase repeat (SNiRR) common to a redox-enzyme superfamily. The saddle-shaped siroheme shares a cysteine thiolate ligand with the Fe4S4 cluster and ligates an unexpected phosphate anion. In the substrate complex, sulfite displaces phosphate and binds to siroheme iron through sulfur. An extensive hydrogen-bonding network of positive side chains, water molecules, and siroheme carboxylates activates S-O bonds for reductive cleavage.

Sulfite reductase structure at 1.6 A: evolution and catalysis for reduction of inorganic anions.,Crane BR, Siegel LM, Getzoff ED Science. 1995 Oct 6;270(5233):59-67. PMID:7569952^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Crane BR, Siegel LM, Getzoff ED. Sulfite reductase structure at 1.6 A: evolution and catalysis for reduction of inorganic anions. Science. 1995 Oct 6;270(5233):59-67. PMID:7569952

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1aop"

@@ Line 1: / Line 1: @@
 ==SULFITE REDUCTASE STRUCTURE AT 1.6 ANGSTROM RESOLUTION==
-<StructureSection load='1aop' size='340' side='right' caption='[[1aop]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
+<StructureSection load='1aop' size='340' side='right'caption='[[1aop]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1aop]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli_(strain_b) Escherichia coli (strain b)]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1geo 1geo]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AOP OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1AOP FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1aop]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli_(strain_b) Escherichia coli (strain b)]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1geo 1geo]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1AOP OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1AOP FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene>, <scene name='pdbligand=SRM:SIROHEME'>SRM</scene></td></tr>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene>, <scene name='pdbligand=SRM:SIROHEME'>SRM</scene></td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CYSIJ ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=37762 Escherichia coli (strain B)])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Sulfite_reductase_(NADPH) Sulfite reductase (NADPH)], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.8.1.2 1.8.1.2] </span></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1aop FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1aop OCA], [http://pdbe.org/1aop PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1aop RCSB], [http://www.ebi.ac.uk/pdbsum/1aop PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1aop ProSAT]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1aop FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1aop OCA], [http://pdbe.org/1aop PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1aop RCSB], [http://www.ebi.ac.uk/pdbsum/1aop PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1aop ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 15: / Line 15: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ao/1aop_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ao/1aop_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 34: / Line 34: @@
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Crane, B R]]
 [[Category: Getzoff, E D]]

1aop

From Proteopedia

Revision as of 10:10, 18 November 2020

SULFITE REDUCTASE STRUCTURE AT 1.6 ANGSTROM RESOLUTION

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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